Zimbra & BES, failed synchronization

Hi all.

I'm a SysAdmin and I implemented Blackberry Enterprise Server 4.1.6 with Zimbra Collaboration Suite 6.0.1 Network Edition.
Everything was perfect for one year, but 3 days ago, after restarting Zimbra, all devices have failed to synchronize.
In BES everything seems fine.

I tried to resend service book, shutdown..etc, but the devices still don't receive mail. It does not work either.
I know this way works: wipping device, add user again to bes and activate mail in device, but I would not do it manually in 30 devices...